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<pre><code class="lang-Java"><span class="hljs-comment">/**
 * &#x5FEB;&#x901F;&#x6392;&#x5E8F;
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 * <span class="hljs-doctag">@param</span> a    &#x5F85;&#x6392;&#x5E8F;&#x6570;&#x7EC4;
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<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">quickSort</span><span class="hljs-params">(<span class="hljs-keyword">int</span>[] a, <span class="hljs-keyword">int</span> firstIndex, <span class="hljs-keyword">int</span> lastIndex)</span> </span>{
    <span class="hljs-keyword">int</span> start = firstIndex;
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        <span class="hljs-comment">//&#x4ECE;&#x540E;&#x5F80;&#x524D;&#x6BD4;&#x8F83;</span>
        <span class="hljs-keyword">while</span> (end &gt; start &amp;&amp; a[end] &gt;= key) {<span class="hljs-comment">//&#x8FD9;&#x91CC;&#x7684;&#x5927;&#x4E8E;&#x548C;&#x5927;&#x4E8E;&#x7B49;&#x4E8E;&#x4E5F;&#x4E0D;&#x80FD;&#x52A0;&#x7B49;&#x53F7;&#x548C;&#x5220;&#x7B49;&#x53F7;&#xFF0C;&#x5426;&#x5219;&#x4F1A;&#x51FA;&#x73B0;&#x8D8A;&#x754C;&#xFF08;&#x524D;&#x9762;&#x52A0;&#x7B49;&#x53F7;&#xFF09;&#x548C;&#x6B7B;&#x5FAA;&#x73AF;&#xFF08;&#x540E;&#x9762;&#x5220;&#x7B49;&#x53F7;&#xFF09;&#xFF0C;&#x4E0B;&#x9762;&#x7684;while&#x5FAA;&#x73AF;&#x540C;&#x7406;</span>
            <span class="hljs-comment">//&#x5982;&#x679C;&#x6CA1;&#x6709;&#x6BD4;&#x5173;&#x952E;&#x503C;&#x5C0F;&#x7684;&#xFF0C;&#x6BD4;&#x8F83;&#x4E0B;&#x4E00;&#x4E2A;&#xFF0C;&#x76F4;&#x5230;&#x6709;&#x6BD4;&#x5173;&#x952E;&#x503C;&#x5C0F;&#x7684;&#x4EA4;&#x6362;&#x4F4D;&#x7F6E;&#xFF0C;&#x7136;&#x540E;&#x53C8;&#x4ECE;&#x524D;&#x5F80;&#x540E;&#x6BD4;&#x8F83;</span>
            end--;
        }
        <span class="hljs-keyword">if</span> (a[end] &lt; key) {
            <span class="hljs-keyword">int</span> temp = a[end];
            a[end] = a[start];
            a[start] = temp;
        }
        <span class="hljs-comment">//&#x4ECE;&#x524D;&#x5F80;&#x540E;&#x6BD4;&#x8F83;</span>
        <span class="hljs-keyword">while</span> (end &gt; start &amp;&amp; a[start] &lt;= key) {
            <span class="hljs-comment">//&#x5982;&#x679C;&#x6CA1;&#x6709;&#x6BD4;&#x5173;&#x952E;&#x503C;&#x5927;&#x7684;&#xFF0C;&#x6BD4;&#x8F83;&#x4E0B;&#x4E00;&#x4E2A;&#xFF0C;&#x76F4;&#x5230;&#x6709;&#x6BD4;&#x5173;&#x952E;&#x503C;&#x5927;&#x7684;&#x4EA4;&#x6362;&#x4F4D;&#x7F6E;</span>
            start++;
        }
        <span class="hljs-keyword">if</span> (a[start] &gt; key) {
            <span class="hljs-keyword">int</span> temp = a[start];
            a[start] = a[end];
            a[end] = temp;
        }
        <span class="hljs-comment">//&#x6B64;&#x65F6;&#x7B2C;&#x4E00;&#x6B21;&#x5FAA;&#x73AF;&#x6BD4;&#x8F83;&#x7ED3;&#x675F;&#xFF0C;&#x5173;&#x952E;&#x503C;&#x7684;&#x4F4D;&#x7F6E;&#x5DF2;&#x7ECF;&#x786E;&#x5B9A;&#x4E86;&#x3002;&#x5DE6;&#x8FB9;&#x7684;&#x503C;&#x90FD;&#x6BD4;&#x5173;&#x952E;&#x503C;&#x5C0F;&#xFF0C;&#x53F3;&#x8FB9;&#x7684;&#x503C;&#x90FD;&#x6BD4;&#x5173;&#x952E;&#x503C;&#x5927;&#xFF0C;&#x4F46;&#x662F;&#x4E24;&#x8FB9;&#x7684;&#x987A;&#x5E8F;&#x8FD8;&#x662F;&#x53EF;&#x80FD;&#x662F;&#x4E0D;&#x4E00;&#x6837;&#x7684;&#xFF0C;&#x8FDB;&#x884C;&#x4E0B;&#x9762;&#x7684;&#x9012;&#x5F52;&#x8C03;&#x7528;</span>
    }
    <span class="hljs-comment">//&#x9012;&#x5F52;  &#x8FD9;&#x91CC;&#x4E5F;&#x4E0D;&#x80FD;&#x52A0;&#x7B49;&#x53F7;&#xFF0C;&#x4F1A;&#x53D1;&#x751F;StackOverflowError</span>
    <span class="hljs-keyword">if</span> (start &gt; firstIndex) quickSort(a, firstIndex, start - <span class="hljs-number">1</span>);
    <span class="hljs-keyword">if</span> (end &lt; lastIndex) quickSort(a, end + <span class="hljs-number">1</span>, lastIndex);
}
</code></pre>
<h2 id="&#x76F4;&#x63A5;&#x63D2;&#x5165;&#x6392;&#x5E8F;&#x6CD5;">&#x76F4;&#x63A5;&#x63D2;&#x5165;&#x6392;&#x5E8F;&#x6CD5;</h2>
<pre><code class="lang-Java"><span class="hljs-comment">/**
* &#x76F4;&#x63A5;&#x63D2;&#x5165;&#x6392;&#x5E8F;
* &#x4E00;&#x4E2A;n-1&#x6B21;&#x7684;for&#x5FAA;&#x73AF;&#x4E3A;&#x9700;&#x8981;&#x63D2;&#x5165;&#x7684;&#x6B21;&#x6570;&#xFF0C;&#x4E00;&#x4E2A;while&#x5FAA;&#x73AF;&#x662F;&#x5C06;&#x8981;&#x63D2;&#x5165;&#x7684;&#x6570;&#x4E0E;&#x524D;&#x9762;&#x7684;&#x6570;&#x6BD4;&#x5927;&#x5C0F;
*
* <span class="hljs-doctag">@param</span> a &#x5F85;&#x6392;&#x5E8F;&#x6570;&#x7EC4;
*/</span>
<span class="hljs-function"><span class="hljs-keyword">private</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">insertSort</span><span class="hljs-params">(<span class="hljs-keyword">int</span>[] a)</span> </span>{
    <span class="hljs-keyword">if</span> (a.length == <span class="hljs-number">0</span>) <span class="hljs-keyword">return</span>;
    <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">1</span>; i &lt; a.length; i++) {<span class="hljs-comment">//&#x8981;&#x63D2;&#x5165;&#x7684;&#x6B21;&#x6570;&#x4E3A;&#x6570;&#x7EC4;&#x957F;&#x5EA6;&#x51CF;&#x4E00;</span>
        <span class="hljs-keyword">int</span> insertNum = a[i];<span class="hljs-comment">//&#x8981;&#x63D2;&#x5165;&#x7684;&#x6570;&#x5B57;</span>
        <span class="hljs-keyword">int</span> j = i;<span class="hljs-comment">//&#x5DF2;&#x7ECF;&#x6392;&#x597D;&#x5E8F;&#x7684;&#x5143;&#x7D20;&#x4E2A;&#x6570;</span>
        <span class="hljs-keyword">while</span> (j &gt; <span class="hljs-number">0</span> &amp;&amp; a[j - <span class="hljs-number">1</span>] &gt; insertNum) {<span class="hljs-comment">//&#x4ECE;&#x540E;&#x5F80;&#x524D;&#x4E00;&#x4E2A;&#x4E00;&#x4E2A;&#x6BD4;&#x8F83;&#xFF0C;&#x628A;&#x6BD4;insertNum&#x5927;&#x7684;&#x5F80;&#x540E;&#x79FB;&#x4E00;&#x4F4D;</span>
            a[j] = a[j - <span class="hljs-number">1</span>];<span class="hljs-comment">//&#x6BD4;insertNum&#x5927;&#x7684;&#x540E;&#x79FB;</span>
            j--;<span class="hljs-comment">//&#x518D;&#x548C;&#x524D;&#x9762;&#x4E00;&#x4E2A;&#x6570;&#x6BD4;&#x8F83;&#x5927;&#x5C0F;,&#x524D;&#x9762;&#x6CA1;&#x6709;&#x6570;&#x4E86;(&#x6B64;&#x65F6;j=0)&#x5C31;&#x8DF3;&#x51FA;while&#x5FAA;&#x73AF;</span>
        }
        a[j] = insertNum;<span class="hljs-comment">//&#x5C06;&#x8981;&#x63D2;&#x5165;&#x7684;&#x6570;&#x653E;&#x5728;&#x8981;&#x63D2;&#x5165;&#x7684;&#x4F4D;&#x7F6E;</span>
    }
}
</code></pre>
<h2 id="&#x5E0C;&#x5C14;&#x6392;&#x5E8F;">&#x5E0C;&#x5C14;&#x6392;&#x5E8F;</h2>
<pre><code class="lang-Java">    <span class="hljs-comment">/**
     * &#x5E0C;&#x5C14;&#x6392;&#x5E8F;
     *
     * <span class="hljs-doctag">@param</span> a &#x5F85;&#x6392;&#x5E8F;&#x6570;&#x7EC4;
     */</span>
    <span class="hljs-function"><span class="hljs-keyword">private</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">shellSort</span><span class="hljs-params">(<span class="hljs-keyword">int</span>[] a)</span> </span>{
        <span class="hljs-keyword">if</span> (a.length == <span class="hljs-number">0</span>) <span class="hljs-keyword">return</span>;
        <span class="hljs-keyword">int</span> len = a.length;
        <span class="hljs-keyword">while</span> (len != <span class="hljs-number">0</span>) {
            len = len / <span class="hljs-number">2</span>;
            <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> g = <span class="hljs-number">0</span>; g &lt; len; g++) {
                <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = g + len; i &lt; a.length; i += len) {
                    <span class="hljs-keyword">int</span> j = i - len;
                    <span class="hljs-keyword">int</span> temp = a[i];
                    <span class="hljs-keyword">for</span> (; j &gt;= <span class="hljs-number">0</span> &amp;&amp; a[j] &gt; temp; j -= len) {
                        a[j + len] = a[j];
                    }
                    a[j + len] = temp;
                }
            }
        }
    }
</code></pre>

                                
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